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Design Engineering (Find Specific Load / Heat Generated Per Minute - Journal)
3) A load of 6400 Kg is carried by a journal rotating in a 270 mm bearing diameter and 400 mm long. Find the specific load on the bearing and the heat generated per minute in the bearing, assuming the shaft speed is 4 r/s and the coefficient of friction is 0.018.
Subject:
Mechanical and Materials Engineering
Topic:
Mechanical Engineering Design (Industrial)
Posting ID:
33105
OTA ID:
103642
this4.doc: Leather belting 75mm wide is to be used to transmit power between two parallel shafts which run at the same speed. The pulleys are 0.6 m diameter. At slow speeds the tension in the slack side is half the tension in the driving side and the angle of lap on the pulley is 180 degrees. If the maximum load on the belting is not to exceed 140 N/ cm of width, neglecting the effect of centrifugal force, estimate the maximum power which can be transmitted at 9.2 r/s. this5.doc: Find the maximum torsional shear stress in a 75 mm diameter shaft transmitting 40 KW power at 1.33 r/s if the maximum twisting moment exceeds the minimum by 40 per cent. What is the greatest twist in degrees pe... click for more
Subject:
Mechanical and Materials Engineering
Topic:
Mechanical Engineering Design (Industrial)
Posting ID:
33108
OTA ID:
103642
Design Engineering (Determine Shift Diameter)
A mild steel shaft is required to transmit 3 kw at 2.33 r/s. Determine the shift diameter assuming a maximum all sheer stress of 65 MPa.
Subject:
Mechanical and Materials Engineering
Topic:
Mechanical Engineering Design (Industrial)
Posting ID:
33112
OTA ID:
103642
Follow up question for OTA 103642
Follow up question for OTA 103642 Assuming an angular impulse =0.5*3(25/12)=3.125pound*ft*sec and an impact that takes 0.1 second, with what force (in pounds force) will the door strike the door jamb? Please provide an explanation with the equations, arithmetic calculations and units. Time continues to be of the essence.
Subject:
Mechanical and Materials Engineering
Topic:
Mechanical Engineering Design (Industrial)
Posting ID:
33685
OTA ID:
103642
Analyze planner equilibrium problem
Require a worked example of the attached problem to self correct. Problem: The structure shown in Figure Q. 1 (see attached) is a pin-jointed section of a canopy and carries a single load of 4 kN acting at the lower right-hand joint. Show that the section is stable and, determine the following: (a) The directions of the support reactions by locating the point of concurrency for the external forces; (b) The magnitudes of the reactions and the load in each member of the canopy using graphical means; (c) The nature of the load in each of the canopy members (ie whether a strut or a tie).
Subject:
Mechanical and Materials Engineering
Topic:
Mechanical Engineering Design (Industrial)
Posting ID:
42074
OTA ID:
104902
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